Yangdong Co. Y90 Series Manuel de service télécharger pdf (Page 38)

OPERATION&MAINTENANCE MANUAL

Section 6 Operation notice of turbo- charger diesel engine

Turbocharger mounted at the exhaust pipe of the diesel engine. Exhaust

gas discharged from the cylinder entry turbocharger casing through exhaust

pipe drives impeller of the turbine, then drives impeller of the compressor

push the pressed air filtered by air filtered into cylinder. Due to more air

pressed into cylinder, more fuel can be injected and burned more enough,

then diesel discharge more power and lower displacement. Meanwhile, it can

be compensated the power when the diesel engine operates at plateau

area( turbocharger with discharge valve owns advantages such as large

torque at low speed , high and low speed performance)

Caution for diesel operation as followed:

1 Favorable lubrication is the key to extend service life of turbocharger and

diesel engine, because turbocharger is a precise part. The faster speed of the

rotor, the higher temperature of the turbine (usual above 640°C), and the

pressure of the lubricant set up rotor shaft (called floating bearing) to work. So

the lubricant shall be clear and pressurized, with high quality. Pressured

lubricant filtered from lubricant system be used at turbocharger. Speed of

turbocharger is much higher than that of diesel, then inferior quality, dirty or

poor lubricate capability, all can damage the turbocharger. So seriously affect

the diesel to work well. Therefore, it is necessary to use CD oil for diesel,

change oil, filter core of oil filter, clear oil sump and oil pump suction regularly

according to the technical maintenance requirement of diesel operation manual.

If the damage of the turbocharger and diesel is caused by the above caution

such as use inferior quality oil, not change oil, filter core of oil filter, clear oil

sump and oil pump suction regularly , causes oil aging, deterioration result in

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Yangdong Co. Y90 Series Manuel de service Page 38